Surface feed-water heater.



n. B. omsou. SURFACE FEED WATER HEATER. APPLICATION FILED JUNE 29191 4.

v Patnt-ed May23, 1916.

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DQB. MORISON.

SURFACE FEED WATER HEATER.

APPLICATION FILED JUNE29. 1914.

1,184,198. Patented ay 2 1916.

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, Z w I I k L\\\\\\ un km v 4 N 24 d UNITED DONALD BARNS MORISON, orHARTLEPOOL, ENGLAND.

SURFACE EED-WAEIER HEATER.

To all whom it may concern Be it known that I, DONALD BARNS Monr- SON, asubject of the King of Great Britain and Ireland,-residing atHartlepool, in the county of Durham, England, have invented Improvementsin Surface F eed-Water Heaters, of which the following is aspecification.

This invention relates to surface feed water heaters of the kindcomprising water receivers containing one or more compartments andconnected together by heating tubes within a containing vessel, and hasfor object to 'provide improved constructural details whereby provisionis aflorded for the longitudinal expansion of the heating tubes and forthe collection and discharge of air from the heated water, combined itmay be with a steam cleansing device forming part of or jointed to thecontaining vessel.

The heater may consist of a cylindrical containing vessel placedhorizontally, vertically or otherwise conveniently disposed, and fittedwith heating tubes arranged between two water receivers which may be ofknown construction and provided with holes normally filled by screwplugs or provided with jointed covers, which when removed will allow ofthe withdrawal of the tubes. One of the receivers contains the inlet andoutlet passages for the water, and is suitably j ointed to thecontaining vessel all in the known manner. The other receiver is, inorder to provide for expansion, flexibly disposed within the containingvessel, and it may be connected to it by an annular diaphragm preferablycorrugated and suitably jointed to the receiver and to the containingvessel by removable rings, or there may be a gland or its equivalentbetween the receiver and the containing vessel. The water to be heatedsuccessively passes through the compartments in each water receiver, andin order to collect the air given oil" from the water, each compartmentcommunicates with an adjoining-compartment or with an air col-- lectingchamber as by a port, pipe or passage through which air from onecompartment may pass into an adjoining compartment, or air collectingchamber ofv lower pressure and from which it is discharged together itmay be with a small quantity of Water into the feed tank or elsewhere.The containing vessel may also comprise a steam cleansing chamber eithercast on or jointed to the containing vessel, and adapted for theSpecification of? Letters Patent.

Patented May 23, 1916.

Application filed June 29, 1914. Serial No. s4s,o7o. 7

separation of oil from exhaust steam as from aux1l1ary engines onshipboard.

The accompanying drawings Figures 1 to. 8. illustrate apparatusconstructed accordmgto my invention. Figs. 1, 2 and 3 illustratefavertical tubular surface heater in wh ch the upper art of the containingvessel is surrounded y a steam cleansing chamber; Flgs. 4 and 5 show amodification of the heater shown in Figs. 1, 2 and 3 and in WhlCll thesteam cleansing chamber is omitted; Fig. 6.1 shows a horizontal tubularsurface heater, the upperportion'of the contaming vessel having attachedto it a steam cleansing chamber, and Figs. 7 and 8 illustrate methods offorming steam tight expansion joints between an, internal water receiverand the side of the containing vessel.

.With reference to Figs. 1, 2, and 3, Fig. 1 is a sectional elevation online AB in Fig. 2. Fig. 2 is a sectional plan view on line C-D in Fig.1, and Fig. 3 is a part sectional elevation on the line E-F in Fig. 2.The heater consists of a containing vessel a fitted with heating tubes barranged between two water receivers c and d which contain holesprovided with removable plugs 9, through which the tubes may beexamined, cleaned or withdrawn. Each water receiver is divided intocompartments that are placed in communication with each other by theheating tubes 6 so that the water entering the branch 71 flows throughthe compartments in series and passes out through the branch 7', all ina known manner. Now according to my invention the conp'artments in thereceiver d are provided with small ports or passages e through which theliberated air collected in each compartment in the upper receiver 03passes from one compartment to another compartment of lower pressure andfinally reaches the air collecting chamber 70 from which it isdischarged, it may be with a small quantity of water, through the cock Zthat is flexibly connected to the air collecting chamber is by the pipem. Owing to the frictional resistance of the water in its passagethrough the tubes the pressure in the compartments will be successivelyless and therefore although the difi'erences in the pressures are smallI have found that provided the means of communication are suitable theyare sufiithe successive compartments into the final air collectingchamber from which it is discharged from the apparatus. The heater isprovided with a steam cleansing chamber 9 having a steam inlet 2', asteam outlet 3 into the heater, oil and water separating devices 4, anda receptacle 7) into which the separated oil and water can flow, the oilbeing discharged periodically cock 1'.

The heater shown in Figs. 4: and 5 is of similar construction to theheater illustrated in Figs. 1, 2, and 3. Fig. 4 being a sectionalelevation-on line L-M in Fig. 5., and Fig. 5 a sectional plan view online G-II in Fig. i. The heater consists of a containing vessel a havingan the heating steam and an outlet 8 for the uncondensed steam, the'drainage water being discharged through the outlet 7. The waterreceivers c and d which are connected together by the tubes b areprovided with covers 8 and t which when removed will allow of thewithdrawal of the tubes 7). The partitions 10 which divide the waterreceiver (Z into compartments, not only form strengthening ribs for thereceiver but also receive the studs 11 by which the cover if is secured,and although not shown in section it will be understood that the lowerreceiver 0 may be constructed in a similar manner. The receiver 'd isflexibly connected to the containing vessel a by an annular corrugateddiaphragm u (see Fig. 7) that is jointed to the vessel a by the ring '1)and to the receiver d by the ring w. The compartments in the receiver dare connected togetherby small pipes a through wvhieh the liberated aircollected in each compartment in the upper receiver d passes from onecompartment to another compartment oflower'pressure and finally reachesthe air collecting chamber is from which it is discharged.

Figs. 6 and 7 show a modification of the arrangements already described,the containing' vessel a being horizontally disposed. The receivers cand (Z are provided with covers 8 and t, and the receiver cl is flexiblyconnected to the containing vessel a by an annular corrugated diaphragmu (see Fig. 7 that is jointed to the vessel a by the ring 0 and/to thereceiver d by the ring w, or the flexible connection may be in the formof a gland as illustrated in Fig. 8, in which the packing as between thecontaining vessel a and thereceiver (Z is held iniposition by the gland7 The compartments in each receiver c and (Z are in direct communicationwith each other by the ports or passages 6 through which air from onecompartment my pass into an adjoining compartment of lower pressure andbe finally collected in the air cham er Z from which it is dischargedtogcthcr it may be with a small by the cock (1 and. the water deliveredcontinually through the inlet 3 for quantity of water through the cock Zinto a feed tank or elsewhere. When the heater is provided with a steamcleansing chamber,

or it may be constructed separately and jointed to the shell of theheater at the top as shown in Fig. 6,'in which the steam cleansing steaminlet 2, a steam outlet 3 into the heater and an outlet 5 through whichexcess steam may flow, as for example, to a steam turbine. The oilseparating devices 1 are in the form of withdra'wable sections which maybe removed through the door 6. A receptacle 9 isconnected to the bottomof the heater and receives the condensed steam from the heater and itmay be the drainage water from the steam cleansing chamber 0, thedischarge of water from the receptacle being controlled by the floatoperated valve 7 which automatically regulates the discharge maintainedin the heater, the steam not condensed in the heater flowingpreferentially together with accumulated air, through the pipe 8vinto asecondary heater in the manner described in the specificationof myPatent Number 1,108,210. A pipe a may be provided, for the purpose ofconveying the air from the first compartment in the receiver 0 direct tothe air collecting chamber 70.

The heaters are fitted with the usual mountings and requirementsnecessary for the satisfactory working of the apparatus, and may beprovided with suitable connections in order that they may be adapted forusein connection with feed water heating apparatus of the kind describedin the specification of my Patent Number 1,108,210.

I am aware that it is known practice to discharge air from of a heaterinto a common outlet, but in apparatus according to my invention the airpasses from one compartment into an adjoining compartment or aircollecting chamber of slightly lower pressure, whereby for a givendischarge of air from the heater there is a minimum discharge of water.

TWhat I claim is 2- 1. A surface water heater comprising a vesselcontaining water receiversconnected together by heating tubes, saidreceivers containing compartments through'which the water successivelyflows, small passages which place two or more of said compartments incommunication with each other and through which passages the airliberated from the water in one'compartment flows into an adjoiningcompartment o lower pressure, and a chamber in which the air given offfrom the lected and discharged separately from the body of water passingthrough the'heater.

2. A surface water heater comprising a water is finally colIthe-c'hamber may form part of the heater chamber 0 is provided with awater without affecting the pressure the water compartments 7 andthrough which passages the air liberatedfrom the water in onecompartment flows into an adjoining compartment of lower pressure, achamber in which the air given ofi from the Water is finally collectedand discharged, and a pipe connecting the compartment into which thewater first enters with said chamber, for the purpose set forth.

Signed at West Hartlepool, in the county of Durham, England, this 17thday of J une DONALD BARNS MORISON. Witnesses:

IIARRY FOTHERGILL, JAMES RUSSELL.

